A sharp converse inequality of three weighted arithmetic and geometric means of positive definite operators

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Abstract

In this paper we consider three-weighted arithmetic and geometric means of positive definite operators constructed by the symmetrization method that appeared in the definition of Ando-Li-Mathias's geometric mean of several positive definite operators and we establish a converse inequality of three-weighed arithmetic-geometric means via Specht ratio.

Original languageEnglish
Pages (from-to)519-523
Number of pages5
JournalMathematical Inequalities and Applications
Volume12
Issue number3
DOIs
StatePublished - Jul 2009
Externally publishedYes

Keywords

  • Matrix inequality
  • Positive definite matrix
  • Specht ratio
  • Symmetrization method
  • Weighted matrix means

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